Intro to Geometry Assessment - Equations of Lines

In the equation y=mx+b,
what does m represent?

• Nothing in particular
• The y-intercept
• The x-intercept
• Slope

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

What does the "b" represent in  $y=mx+b$  

• y-intercept

• nothing

• slope

• base

Tags

CCSS.5.G.A.1

What is the slope of the line?

 $y=\frac{5}{4}x-9$  

•  $m=-9$  

•  $m=-\frac{5}{4}$  

•  $m=\frac{5}{4}$  

• 5 units right and 4 units up

• can't be determined

What is the equation of line in slope-intercept form with m = 2 and b = -3?

• y = -2x+3

• y = -3x+2

• y = 3x-2

• y = 2x-3

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

What is true about slope? Select all that apply?

•  $m=\frac{rise}{run}$  

•  $m=\frac{change\ in\ y}{change\ in\ x}$  

•  $m=\frac{y_2-y_1}{x_2-x_1}$  

• m is always constant

• m is the steepness (inclination) of a line

Find the slope of the line that passes through
(10, 1) and (5, 2)

• 1/5
• -1/5
• 5
• -5

Tags

CCSS.8.EE.B.5

Which of these represents point-slope form of a linear equation?

• y - y₁ = m(x - x₁)
• Ax + By = C
• y = mx + b

What is the equation of a line in slope-intercept form with m = -2 and contains the point (4, -2)?

• y = -2x-6

• y = 6x - 2

• y = -2x+6

• y = 2x+6

Which equation matches the graph? 

• $y=-\frac{1}{4}x+2$

• $y=\frac{1}{4}x+2$
  

• $y=4x+2$
  

• $y=2x+4$
  

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Slopes of perpendicular lines are...

• negative reciprocals
• opposites
• identical
• flipped

Tags

CCSS.HSG.GPE.B.5